Screw driver



C. TRUNICK.

SCREW DRIVER. APPLlcATloN FILED .1116.12.1920. RENEwEn APR. 1.1922.

1,418,184, l A Patented May 30, 1922.

SCREW' DRIVER.

Application led August 12,A 192.0, Serial No. 402,938.

To .all w 71 om t may concern f Be it known that I, CHARLES TRUNIGK, a citizen of the United States, residing at Farrell, in' the county of Mercer and State of Pennsylvania7 have invented certain new and useful Improvements in Screw Drivers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains tol make and use the same. f

This invention relates to an vimproved screiv-driver and one object of the invention is to provide a screw-driver having an improved handle constructionincluding as one of its parts an improved socket for releasably holding a removable bit. y y

Another object of the invention'is to so construct the socket that the bit may be easily thrust into place and the securing sleeve then moved 01' its own accord to the locking position. f y e Another object of the invention is to so construct the socket that the same may include a spring serving to discharge the bit from the socket when the securing sleeve is moved to the releasing position.

Another object of the invention is to so construct the ysecuring sleeve that it may be limited in its rotary movement and yieldably held'against rotary movement and thus caused to normally remain in the locking position and to return to the locking position when released after being moved to the releasing position.

Another object of the invention is to provide a screw driver o1 the removable bit type in which the bit may be easily and quickly put in place and removed and which will be securely held in place when placed in the socket and prevented from having any movement, thus providing a substantially solid construction when the bit is in place.

Another object of the invention is to so construct the screw-driver that it will be very strong and durable and not be liable to break when in use.

This invention is illustrated in the accompanying drawings, wherein:

Figure 1 is a view showing the improved screw-driver in side elevation, a ring ca rried by the locking sleeve being shown in section.

Figure 2 is a view similar to Fig. 1 show- Specication of Letters Patent. :[)grlgntd` May 30, 1922,

Renewed April 7, 1922.V Serial No. 550,515.

ing the bit thrust entirely into the socketland the locking sleeve turned 'from the posit1on 1n Fig. 1 to the locking position.

Figure 3 is a sectional view taken along the line 3 3 of Fig. 1. *Figure 4 is a transverse sectional view taken along the line 41--4 of Fig. 2.

Figure 5 is a `transverse sectional view taken along the line 5-5 of Fig. 3. Figure 6 is a perspective view showing the bit partially inserted, as shown in Fig. 1. Figure 7 is a perspective view showing the bit entirely inserted Aand the locking sleeve in the locking position as shown in Fig. 2. e

rFigure 8 is a perspective view of the forward end portion of the handle showing the locking sleeve removed.4

This improved screw-driver is provided with a handle including a metal sleeve 1 in which is received the stock 2 formed of wood and held in 'place by the'usual pin 3. The

f handle is provided with an outstanding collar l` and the collar carries a pin 5-the purpose of which will hereinafter be brought out. The forward' end portion of; the handle is provided with oppositely disposed slots 6 which communicate with the longitudinally extending opening or pocket 7 y pocket will be held against rotary movement byA `the side .pins 9 iitting vinto the slots 6.- The end portions of the pins 9 will extend beyond the neck portion 10 of the handle for fitting into bayonet slots 11 formed in the sleeve 12 which sleeve is rotatably mounted upon the neck 10 and limited in its rotary movement by a the neck and extends through a slot 14 formed in the sleeve. This sleeve 12 carries a collar 15 which lits upon the collar 4L and carries a pin 16 similar to the pin 5. The pins 5 and 16 are passed through the eyes at the end of the spring 17 and it will thus be seen that when the sleeve is rotated to bring the bayonet slots 11 into registry with the slots 6, the spring will be stretched and will serve to return the sleeve to its normal klocking position as soon as the sleeve is reas the end portions of the pins have passed so that the bit 8. which fits into thisv pin 13 which is carried by slots.

vThere has, therefore, VbeenA provided a spring. 18 which is positioned in the pocket? and has its inner end passed through an opening formed in the pinextension 19 of l the block 20, positioned in the inner end of the pocket and secured by a pin 21. The outer end portion of this spring 18 passes through an opening formed in the pinextension 22 of the block 23 and this block 23 has its outer ends cupped for receiving the end of the bit. rTherefore when the bit is pressed inwardly,`it will engage the block 23 and move the same inwardly against the action of the spring 18 thus compressing the spring. ,Therefore when the sleeve is rotated and moved from the locking position to the yreleasing position of Fig. 1, the spring 18 will expand and drive the bit out of the socket.

' The bit will be It is therefore evident that the bit can be put in place with the sleeve turned to the releasing position and then pressed inwardly until the securing or locking sleeve is released and moved to the locking position. securely held in place and there will be no danger of the securing sleeve accidentally moving to a releasing position. When, however, it is desired to 1 remove the bit, it is simply necessary to rotate the sleeve to the releasing position and vrotary movement vmy hand.

the spring 18 will act to expel the bit thus making it easy to remove the bit and put a new one in place. A covering ring or bushing 24- is placed upon the sleeve and covers the slots 11 and le thus hiding these slots and further preventing the slots from becoming choked or the hand ofthe operator being cut while using the device.

What is claimed is:

A screw driver comprising a handle having a longitudinally extending socket formed therein,'a collar formed upon the handle intermediate the depth of the socket, the forward end portion of the handle having longitudinally extending side slots cut from its end and communicating with the socket, a sleeve rotatably mounted upon the forward end portion of the handle and having bayonet slots cut from its end for registering with the slots of the handle, VVthe sleeve having an outstanding collarfitting upon the collar of the handle and forming a spring housing, a pin extending from lthe handle through an angular slet formed in the sleeve to limitrotary movement ofthe sleeve, pins carried by the sleeve and collar -i of the handle and extending longitudinally of the handle in opposite directions within the spring housing, a spring positioned within the spring housing and having connection with the pins of the sleeve and handle collar to yieldably retain the sleeve against out of a locking position, a protector sleevefitting upon the slotted sleeve for covering the slotted sleeve and outer end portion of the side pin, and abit fitting into the socket and'h'aving side, pins for iitting into the registering slots of the sleeve and handle. y

In testimony whereof I vhave hereunto set CHARLES TRUNICK. 

